Extreme Cold/Wind Chill in N. Brooks Rng Colville Rvr W, Alaska

A cold air mass combined with a southwest wind of 15 to 25 mph to produce wind chills of 60 below zero or lower along parts of the Central Beaufort Sea Coast and in parts of the Northwest Brooks Range.

Zone 203: Temperatures of 30 to 35 below zero combined with a southwest wind of 15 to 25 mph to produce wind chills as low as 67 below at Nuiqsut and to 62 below at Deadhorse. Wind chills of 60 below or lower were observed from approximately 1800AKST on the 12th through 0900AKST on the 13th.

Zone 205: Temperatures around 35 below zero at Ikpikpuk combined with a southwest wind of 15 to 20 mph to produce wind chills as low as 64 below. Wind chills of 60 below or lower were observed from approximately 1000AKST through 1600AKST on the 12th.